/Engine/Plugins/Runtime/Metasound/Source/MetasoundGraphCore/Public/MetasoundDynamicOperatorTransactor.h
Callbacks are invoked on the same thread which executes the dynamic operator.
struct FDynamicOperatorUpdateCallbacks
FOnInputVertexU...
OnInputAdded
FOnInputVertexU...
OnInputRemoved
FOnOutputVertex...
OnOutputAdded
FOnOutputVertex...
OnOutputRemoved
FOnOutputVertex...
OnOutputUpdated